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Amphastar Pharmaceuticals AMPH 24.48 0.86 3.64%

AMPH Historical Options Analysis

Explore AMPH (Amphastar Pharmaceuticals) historical options data, volatility, Greeks and positioning. Compare signals over time in the free Historical Lab preview.

Previous-day view · Mon Sep 21 close. You are previewing the previous trading day. Subscribe to see today live and every other date — plans start at Delta, $39/mo. Sign up Sign in
Group
Window
Scale
Plotted 3/8
Metric library

Volatility

Interactive timeline

AMPH / Comparative study

3 signals / 502 sessions
Window statistics

Signal snapshot

Current value vs. selected history
IV Rank z -0.64
12.94
Mean
26.86
Window
-69.1%
ATM IV z -0.40
0.6
Mean
0.77
Window
-0.3%
IV Percentile z -0.65
34.92
Mean
54.71
Window
-52.3%
Relationship matrix

Correlation

Pearson r
Signal IV Rank ATM IV IV Percent...
IV Rank 1.00 0.62 0.78
ATM IV 0.62 1.00 0.74
IV Percent... 0.78 0.74 1.00
Source observations

Data inspector

1-50 of 502
  • 1 / 11
Date Close IV Rank ATM IV IV Percentile
2026-09-21 24.48 12.94 0.6 34.92
2026-09-18 23.62 11.39 0.56 26.48
2026-09-17 23.82 11.44 0.56 26.48
2026-09-16 23.95 17.01 0.7 54.55
2026-09-15 23.64 7.83 0.47 10.28
2026-09-14 23.91 5.94 0.42 4.37
2026-09-11 23.78 7.06 0.45 7.91
2026-09-10 23.54 7.86 0.47 9.49
2026-09-09 23.04 8.78 0.5 12.65
2026-09-08 22.93 5.29 0.41 1.98
2026-09-07 22.91 9.2 0.51 13.49
2026-09-04 23.18 6.34 0.43 3.95
2026-09-03 23.84 8.45 0.49 10.67
2026-09-02 23.74 10.91 0.55 22.53
2026-09-01 22.96 12.72 0.6 29.37
2026-08-31 22.53 11.08 0.55 22.71
2026-08-28 22.01 32.88 1.1 79.37
2026-08-27 21.88 18.49 0.74 57.94
2026-08-26 22.02 23.78 0.87 69.05
2026-08-25 21.98 2.4 0.34 0.79
2026-08-24 21.52 6.79 0.45 5.58
2026-08-21 21.6 7.89 0.47 9.13
2026-08-20 21.68 9 0.5 13.1
2026-08-19 21.74 10.5 0.54 20.63
2026-08-18 21.34 6.96 0.45 8.33
2026-08-17 20.86 20.51 0.79 62.95
2026-08-14 20.91 12.29 0.58 29.37
2026-08-13 20.18 17.06 0.7 53.17
2026-08-12 19.98 14.29 0.63 39.29
2026-08-11 20.42 17.89 0.73 57.54
2026-08-10 20.31 15.22 0.66 43.82
2026-08-07 20.78 11.83 0.57 27.38
2026-08-06 19.81 36.85 1.2 83.73
2026-08-05 20.24 27.82 0.98 76.19
2026-08-04 19.9 29.1 1.01 77.38
2026-08-03 20.22 24.23 0.89 71.71
2026-07-31 19.94 20.51 0.79 63.1
2026-07-30 20.38 16.09 0.68 49.21
2026-07-29 20.58 17.12 0.71 53.57
2026-07-28 20.15 17.41 0.71 54.37
2026-07-27 19.18 14.18 0.63 39.84
2026-07-24 18.72 14.64 0.64 42.06
2026-07-23 18.87 13.4 0.61 36.51
2026-07-22 19.3 16.06 0.68 47.22
2026-07-21 19.59 15.63 0.67 44.84
2026-07-20 19.63 13.25 0.61 35.86
2026-07-17 19.75 11.75 0.57 26.59
2026-07-16 19.86 13.13 0.61 34.92
2026-07-15 19.4 22.49 1.02 75
2026-07-14 18.8 9.86 0.6 33.73